Compilare: main.c: In function 'main': main.c:11:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &k); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:13:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &x); ^~~~~~~~~~~~~~~~~~~~~ main.c:22:17: warning: 'smax' may be used uninitialized in this function [-Wmaybe-uninitialized] if(i>=k && sc>smax){ ~~~~~^~~~~~~~~~ main.c:15:37: warning: 'sc' may be used uninitialized in this function [-Wmaybe-uninitialized] if(i>k && sum[i]-sum[i-k]>sc+x){ ~~^~